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    <title>Document</title>
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    <h1>标题1</h1>
    <h2>标题2</h2>
    <h3>标题3</h3>
    <hr size="50", width="5000", color="red"> </hr>
    <h4>标题4</h4>
    <h5>标题5</h5>
    <h6>标题6</h6>

    <p>测试测试测试</p>
    <p align="center">测试测<br/>试测试sjdhfsjdhfsjdfhs<br/>jhfjsbhhh</p>
    <p align="left">测试测试测试</p>
    <p align="right">测试测试测试</p>
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